Bridging Loan Calculator UK — Discovery Notes

JTBD

“How much will a bridging loan cost me?” / “Is bridging cheaper than losing my purchase?” / “What is the difference between an open and closed bridge?” / “What rate can I expect on a UK bridging loan in 2026?” / “How do I calculate the total cost including all fees?”

Target audiences

Core calculator (3 tabs)

Tab 1: Bridging Cost

Tab 2: Chain Break

Tab 3: Open vs Closed

Relevant UK regulation

FCA / MCOB

Consumer Duty (FCA PS22/9)

Land Registration Act 2002

Key data 2026 (verified March 2026)

ParameterTypical rangeNotes
Monthly rate0.52%–1.5%Lower end for prime, low LTV closed bridge; higher for complex/open
Prime rate (LTV <55%)From 0.52%/monthClosed bridge, strong exit, experienced borrower
Standard residential0.7%–1.0%/monthLTV 65%–75%, good credit, clear exit
Higher LTV / open1.0%–1.5%/monthLTV 70%–80% or uncertain exit
Arrangement fee1%–2% of gross loanTypically 1.5% for mainstream lenders
Exit fee0%–1%Many mainstream lenders: 0%; some charge 1%
Max LTV75% gross (some 80%)Gross = including all fees and rolled interest
Typical term1–18 monthsMaximum usually 24 months; 6–12 months most common
Open vs closed premium+0.10%–0.30%/monthVaries by lender and exit certainty
Minimum loan size£25,000–£50,000Some specialist lenders from £25K
Valuation fee£300–£800Desktop / AVM for simple cases; full survey for complex
Legal fees£800–£1,500Borrower pays lender’s legal costs as well as own

Formulas (implemented)

Rolled-up interest:
  Gross = loan + arrangement_fee_amount
  Final = Gross × (1 + monthly_rate)^term
  Interest = Final - Gross

Serviced interest:
  Monthly_payment = loan × monthly_rate
  Total_interest = Monthly_payment × term

Fees:
  Arrangement_fee_amount = loan × arrangement_fee_pct
  Exit_fee_amount = loan × exit_fee_pct
  Total_cost = Total_interest + Arrangement_fee_amount + Exit_fee_amount

Effective APR:
  APR = (1 + monthly_rate)^12 - 1

Chain break bridge amount:
  Bridge = max(0, buying_price - deposit - sale_proceeds)

Competitors / similar tools

Differentiation sum.money:

SEO potential

Sources